Servo type soil frost heaving and thaw collapse test device and test method thereof

A test device and servo-type technology, which is applied in the field of thawing test device, soil frost heave, and servo-type soil frost heave, can solve the problems of inability to provide convenience for scientific research, achieve a high degree of simulation, and improve the effect of test efficiency

Pending Publication Date: 2020-12-15
HEILONGJIANG PROVINCIAL HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that scientific research cannot be facilitated due to lack of related research on frost heaving and thawing settlement characteristic test equipment and test methods of soil in the prior art

Method used

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  • Servo type soil frost heaving and thaw collapse test device and test method thereof
  • Servo type soil frost heaving and thaw collapse test device and test method thereof
  • Servo type soil frost heaving and thaw collapse test device and test method thereof

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specific Embodiment approach 1

[0028] Specific implementation mode one: combine Figure 1 to Figure 2 Describe this embodiment, a kind of servo-type soil frost heaving and thawing test device of this embodiment, it comprises base 1, test cabin 2, replenishing water device 3, heating device 4, pressurizing device 5, displacement sensor 6, control System 7, data acquisition module 8, sample mold 9, water bath system 10 and refrigeration system 11, refrigeration system 11 is installed on the base 1, test chamber 2 is installed on the refrigeration system 11, heating device 4 is installed in the test chamber 2, And the heating device 4 is located at the top of the test chamber 2, the sample mold 9 is installed in the test chamber 2, the displacement sensor 6 is installed on the sample mold 9, the pressurizing device 5 is installed at the upper end of the test chamber 2, and the pressurizing device 5 The pressurizing rod passes through the upper end of the test chamber 2 and contacts with the upper end of the sa...

specific Embodiment approach 2

[0038] Specific implementation mode two: combination figure 2 Describe this embodiment, the sample mold 9 of this embodiment comprises mold top plate 9-1, casing 9-2, mold bottom plate 9-3 and sample 9-4, and casing 9-2 is installed on mold bottom plate 9-3 Above, the sample 9-4 is installed in the casing 9-2, and the mold top plate 9-1 is installed on the sample 9-4. With such arrangement, it is convenient to make and fix the sample. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0039] Specific implementation mode three: combination figure 2To illustrate this embodiment, the sample mold 9 of this embodiment also includes a top plate circulating liquid inlet pipe 9-1-1 and a top plate circulating liquid outlet pipe 9-1-2, a top plate circulating liquid inlet pipe 9-1-1 and a top plate circulation The liquid outlet pipe 9-1-2 is vertically inserted on the mold top plate 9-1. In this way, it is connected to the sample mold through a hose, and its circulating medium circulates on the top plate and bottom plate of the mold through the temperature required by the test, so as to realize different freezing methods and freezing temperatures. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a servo type soil frost heaving and thaw collapse test device and a test method thereof, and relates to a test device and a test method. According to the invention, the problemof no related research on frost heaving and thaw collapse characteristic test related equipment and test method of the soil body under the condition of applying a constant load in the prior art is solved. A refrigerating system is installed on a base, a test cabin is installed on the refrigerating system, a heating device is installed in the test cabin, a sample mold is installed in the test cabin, a displacement sensor is installed on the sample mold, a pressurizing device is installed at the upper end of the test cabin, a water supplementing device is installed on the outer side wall of thetest cabin, a control system, a data acquisition module and a water bath system are sequentially mounted on the right sides of the test cabin and the refrigerating system from top to bottom. The method comprises the steps of preparing a sample; installing and connecting a sample mold; connecting the water bath system with the sample mold; setting test parameters; supplementing water to the sample; and observing whether the test time of the sample reaches a set time length or not, and if so, stopping the test. The device is used for soil frost heaving and thaw collapse tests.

Description

technical field [0001] The invention relates to a soil frost heave and thaw settlement test device and a test method thereof, in particular to a servo-type soil frost heave and thaw settlement test device and a test method thereof, and belongs to the technical field of testing characteristics of frozen soil. Background technique [0002] Frost heaving damage of foundation soil has always been one of the main problems of freezing damage in engineering projects in cold regions, and frost heaving is an extremely complex physical process. With the decrease of soil temperature and the progress of heat exchange process, when the soil temperature reaches the initial Freezing occurs at the freezing temperature, and the ice interlayer formed by the pore water in the soil and the crystals and lenses that migrate into the water invade the soil, causing frost heaving of the soil. Frost heaving of soil has great harm to the structural safety and operation stability of engineering buildin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
CPCG01N25/00
Inventor 苏安双郭峰李兆宇郑健高士军王国志田文石北啸王沪李晓双王群
Owner HEILONGJIANG PROVINCIAL HYDRAULIC RES INST
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